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Stupidly smooth, insane drags, and a feeling of overall "tightness" for want of a better word

Nanotoxicology 11: 1070-1085 Keogh CL et al ( 2017 ) The double edge to parasite escape: invasive host is less infected but more infectable Ecology, 98(9) 22412247 Callaghan NI

We also assess non-essential features that potentially add value (but also add weight) such as dedicated sleeping bag compartment, floating top lid, ice axe loop, side zippers, U-shaped main compartment zippers, hydration bladder pocket, adjustable torso length, included raincover, trekking pole attachment, bottom attachment straps, and internal pockets

Many pros committed to one pattern or lake